Temperature regulator for the air supply of internal-combustion engines



July 27, 1926. Y 1,594,251

E. s. FIEDLER TEMPERATURE REGULATOR FOR THE AIR SUPPLY OF INTERNAL COMBUSTION ENGINES Filed May 2 1925 Z'fzkdkr-,

INVENTOR ATTO RN EY Patented July 27, 1926.

warren ELIAS S. FIEDLER, OF LA CROSSE, 'W'ISCONSIN.

Application filed May 2, 1925. Serial No. 27,607.

The object of my present invention is the provision of a peculiar and advantageous device designed to be interposed between and connected with the stove on the exhaust manifold and the carbureter of an internal combustion engine, and to so act on the air passing from the stove into the carburetor as to increase the efficiency of the motor by regulating the temperature of the air passing into the carburetor.

Other objects and practical advantages of the invention will be fully understood from the following description and claims when the same are read in connection with the drawings, accompanying and forming part of this specification, in which Figure 1 is a side elevation showing my improvement as properly arranged relative to a carburetor.

Figure 2 is an enlarged detail section illustrating the preferred embodiment of my invention.

Figure 3 is a fragmentary detail hereinafter explicitly referred to.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

I show in Figure 1 a carbureter 1, and I also show in connection with the carbureter 1 the intake manifold 2 of an internal combustion engine. At 8 is a conduit designed to lead from what is known as the stove on the exhaust manifold of the engine.

My novel device is interposed between the conduit 3 and the carbureter 1, and in the preferred embodiment of the invention the device is made up of two aluminum casing sections 4L and 5 of circular cross-section, the said casing sections being detachably connected together by the cooperating means iilustrated which preferably comprises a flange 6 on the section i in which flange are notches 7, and tongues 8 on the section 5 and designed when relatively arranged as shown in Figure 3 to detachably hold the sections together and also arranged when placed coincident with the notches 7 to permit of ready separation of the sections 1 and for an important purpose hereinafter set forth. While I prefer to employ the detachable connection illustrated, I would have it understood at this point that it is within the purview of my invention to detachably connect the sections 1- and 5 together in any appropriate manner.

In addition to the casing sections at and 5 my improvement comprises a truncated cone 9 or copper wire removably arranged in the casing section 4, and a diaphragm 1O permanently fixed in the casing section 5, the said diaphragm 10 being fluted at 11 and foraininous at 12 and being provided with a ribbed or fluted cone projection 13, open atboth ends and provided at points between its ribs lei with apertures 15. As will be readily apparent the large end of the copper cone 9 is toward the carbureter 1 as is also the large end of the conical projection on the diaphragm 10.

As the air passes from the heating device on the exhaust manifold into the carbureter, due to the suction of the engine, the member 9 will absorb some of the heat from the air and as said member 9 and the sectional casing are formed of light material of extremely high heat conductivity, these parts will rapidly cool off so that this device will prevent overheating of the air entering the carburetor, which would lessen the efficiency of the engine. Thus the device acts as a temperature regulator for the air entering the carburetor and tends'to cool said air if it has been overheated by the stove on the manifold. The perforations in the diaphragm 1O enable the air to circulate and prevent the formation of a dead air pocket.

By virtue of the casing sections at and 5 being detachably connected together it will be understood that in extremely warm weather the sections 4 and 5 can be separated for the removal of the member 9 and may then be expeditiously and easily connected together so as to adapt the device for summer driving when less hot air is desirable.

1 have specifically described the preferred embodiment of my invention in order to impart an exact understanding of the invention in all of its details. I do not desire, however, to be understood as confining myself to the specific structure disclosed, my invention being defined by my appended claims within the scope of which structural changes may be made without departure from my invention.

Having described my invention, what I claim and desire to secure by Letters Patent, 1s:

1. A temperature regulator for the air supply of internal combustion engines, comprising a casing, a truncated cone shaped member of coiled copper Wire in said casing, and a foraminous diaphragm in the casing and in opposed relation to the large end of said cone shaped member and having a tubular projection extending into the cone shaped member and open at both ends.

2. A temperature regulator for the air supply of internal combustion engines, comprising a casing, a truncated cone shaped member of coiled copper Wire in said casing, and a 'loraminous diaphragm in the casing and in opposed relation to the large end 0t said cone shaped member and having a tubular projection extending into the cone shaped member and open at both ends; the said i'oraminous diaphragm being fluted, and. the said tubular projection thereof being tapered and longitudinally ribbed and provided between the ribs with apertures.

23. A ten'iperature regulator for the air supply of internal combustion engines, comprising a circular tapered casing section, a second circular tapered casing section having its large end opposed to and detachably connected with the first-named casing section, a truncated cone shaped member of copper Wire removably arranged in the firstnamed casing section, and an apertured diaphragm carried in the second named casing section and opposed to the large end oi said cone shaped member.

a. The combination with a carbureter of an internal combustion engine, of a temperature regulator for the air supply comprising a casing open at its opposite ends and having one or said ends in connection with the carbureter, a tapered hollow member of coiled copper Wire arranged in said casing and open at both ends and having its large end toward the carbureter, and an apertured diaphragm arranged in the casing between the said tapered member and the carbureter.

5. The combination with a carbureter of an internal combustion engine, of a temperature regulator for the air supply comprising a casing open at its opposite ends and having one of said ends in connection With the carburetor, a tapered hollow member of coiled copper wire arranged in said casing and open at both ends and having its large end toward the carbureter, and an apertured diaphragm arranged in the casing between the said tapered member and the carburetor; the said diaphragm being perforated and being provided with a central tubular projection open at both ends and extending into the tapered member and having perforations.

In testimony whereof I affix my signature.

ELIAS S. FIEDLER. 

